Problem- sorbic acid hc6h7o2 is a weak monoprotic acid with, Ask an Expert

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Problem- Sorbic acid (HC6H7O2) is a weak monoprotic acid with Ka=1.7X10^-5. Its salt potassium sorbate is added to cheese to inhibit the formation of mold.

What is the pH of a solution containing 11.50g of potassium sorbate in 1.95L of solution?

I am not able to get the correct answer please help me

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